Hey all,
So I got a cheap shunt wound motor recently. It's a military spec starter/generator. The guy said the field coils can only take 24v max, but didn't give me a current limit. The motor supposedly can handle 96v and a lot of current. 18HP continuous at 72V The nameplate is missing, so that's about all the info I have and I don't know how accurate it is.
I have a little PWM controller for motor testing, but how should I excite the field windings? Just hook up a 12v battery directly? There is 2.4 ohm resistance, so I'm expecting it will draw 5-6 amps. I just want to double check before I fry the motor by hooking up the battery.
Also, what controllers work well for separately excited motors? Here's the short list of controllers I'm considering:
Sevcon Powerpak SEM (version 3) http://www.sevcon.com/pages/powerpakSEM.html Zapi Sem 3 http://www.electrofit-zapi.com/hfcontsepex.htm Any other suggestions? Thanks, Seth
